/*
 * MIT License
 *
 * Copyright (c) 2019 Jerverless Org.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.jerverless.core.server;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import org.jerverless.config.app.Route;
import org.jerverless.core.middleware.MiddlewareProcessor;
import org.jerverless.core.runner.FunctionRunner;

import java.io.IOException;
import java.io.OutputStream;

/**
 *
 * @author shalithasuranga
 */
public class FunctionHandler implements HttpHandler {
    private Route route;
    private MiddlewareProcessor middlewareProcessor;

    public FunctionHandler(MiddlewareProcessor middlewareProcessor, Route route) {
        this.middlewareProcessor = middlewareProcessor;
        this.route = route;

        // register middlewares associated with this route
        middlewareProcessor.registerMiddlewares(route);
    }

    public void handle(HttpExchange he) throws IOException {
        String out = new FunctionRunner(route).exec(he).getContent();

        middlewareProcessor.resolve(route.getEndpoint(), he);
        
        he.sendResponseHeaders(200, out.length());
        OutputStream os = he.getResponseBody();
        
        
        os.write(out.getBytes());
        os.close();
    }
    
}
